Maeda MK0003, Руководство по обслуживанию, Страница: 100 / 348

2-72
8.2 OVERVIEW
Valve rating specifications
Maximum service pressure
20.6 MPa (210 kgf/cm
2
)
Rated flow rate 50 L/min
Back pressure valve set pressure 1.34 to 1.49 MPa (13.7 to 15.2 kgf/cm
2
)
Reducing valve set pressure 1.42 to 1.47 MPa (14.5 to 15.0 kgf/cm
2
)
Temperature range of oil used
-20 to 80

C
Viscosity range of recommended hydraulic oil 8 to 400 cSt
Solenoid rated specifications
Rated voltage 12 VDC
Voltage fluctuation range +20 to -10% V
Current and power
consumption
(at 20

C)
Solenoid Nos. 1 to 8 0.91 A, approx. 11 W (for actuator drive and control)
Solenoid No. 9 0.98 A, approx. 11.7 W (emergency stop valve)
Solenoid Nos. 10 and 11
1.7 A (for flow rate control valve and accelerator positioner
controlling)
Conducting rating
Continuous (Continuous power ON causes the solenoid to be
heated to a high temperature. May cause a burn, if touched
inadvertently.)
This is a magnetic control valve comprising a magnetic direction switching function for starting and stopping the load
actuator by means of a solenoid valve as well as a function for maintaining the actuator action at a constant speed
when discretely by means of a flow rate control valve with pressure compensation.
I-Q characteristic of magnetic flow controller (Negative pressure 9.81 MPa)
When supplying 30 L/min (for reference)
I-Q characteristic of magnetic flow controller (Negative pressure 9.81 MPa)
Adjustment range when supplying 10 L/min
At 1200 mA
4.9 ± 1 L/min should be targeted
0
+0.5